Can Gravity Leak from Alternate Universes?

Why does biro ink smell? How can you reset your tolerance to caffiene? Why can't my sat nav and my speedometer agree? We take on your science questions, as well as discover a lonely rogue planet and hear the DNA detective story that stopped an MRSA outbreak in its tracks. Plus, in our Question of the Week, we find out if menstrual cycles synchronise...

I was listening to the "Ask the Naked Scientist" podcast this morning, and two of your answers prompted other questions.
Regarding parallel universes, is it possible that so-called "dark matter" isn't actually physically present in our universe? Could it be a manifestation of...

Hello Naked Scientists!
My name is Ari and I'm a plant pathology student in Helsinki University, Finland. My boring summer job has allowed me to listen to your splendid podcasts and I usually listen to three shows per day.
My question concerns caffeine tolerance. When you ...

Best known for Brunel’s Clifton Suspension Bridge, the Avon Gorge in Bristol, southwest England is also home to several unique species of plants. Some tree species here – varieties of sorbus – are found nowhere else in the world and have evolved through an unusual reproductive ...

Hi
Why does my car sat nav say I am travelling at a different speed to my car speedometer. Usually the speedometer says I am going faster than the Sat Nav so which is more accurate?
Thanks
Joanne Sexton

This week, the journal Lancet Infectious Diseases included a rather unusual detective story – one where rapid DNA sequencing was used in a hospital to track an outbreak of MRSA down to one unsuspecting carrier. It bears all the hallmarks of good television forensic crime drama,...

Hi Dr Chris, I live in central South Africa - Free State, and don't receive the radio signal for 702 but down load the pod casts and listen to them then in the car, i have a question that i wonder if you can shed some light on...
When flying up to Europe or down here to South ...

Dear Dr Smith
I greatly enjoy listening to you on Friday mornings in Cape Town and am awed by your polymathy.
Some time in the nineties (1998 provides a terminus ad quem because that's when I joined the internet, and I relayed the information to a cyber-friend in America...

Hi!
I'm Riin from Estonia and I love listening to your podcasts all the time when walking (between my universities buildings) at my university town Tartu.
Anyways - I was wondering, what happens to human body, when something/somebody scares it? I tend to be frightened easil...

Hi Naked Scientists,
I was just wondering - if planets like Jupiter are just gas giants, why is it they exert such enormous gravitational pull on surrounding matter, like the asteroid belt? Do they have a very large, dense core providing the pull or is the gas highly compress...

Hi naked scientists. Thank you for your awesome podcast.
I would like to know if there is a scientific or evolutionary reason that women's menstrual cycles synch up when living together.
Michele & Jesse Padberg
Dixon, New Mexico

&nbsp| The Naked Scientists® and Naked Science® are registered trademarks created by Dr Chris Smith.

Information presented on this website is the opinion of the individual contributors and does not reflect the general views of the administrators, editors, moderators, sponsors, Cambridge University or the public at large.